Jornal de Química Analítica Ambiental

Shale gas extraction has revolutionized the global energy landscape, providing access to vast reserves of natural gas previously deemed uneconomical to extract. However, the process of hydraulic fracturing, or "fracking," which is employed to release the gas from the shale formations, poses significant challenges, particularly in terms of water management. With water scarcity becoming an increasingly critical issue, it is crucial to explore innovative approaches that can optimize water usage in shale gas extraction. One such approach is Rectangular Pulse Hydraulic Fracturing (RPHF), a technique that holds promise for improving water management in this industry. This article aims to delve into the concept of RPHF and highlight its potential benefits and challenges.

Agricultural sustainability is crucial for ensuring long-term food security while minimizing the environmental impact of farming practices. One key aspect of sustainable agriculture is the efficient use of fertilizers, particularly nitrogen-based fertilizers, which play a vital role in enhancing crop productivity. However, the excessive and inefficient use of nitrogen fertilizers can lead to environmental problems such as water pollution and greenhouse gas emissions. To address this challenge, the development and evaluation of Enhanced Efficiency Nitrogen Fertilizers (EENFs) have gained significant attention. This paper explores the application of a greenhouse multi-phase tracking system to evaluate the impact of EENFs on agricultural sustainability.

Industrial and environmental disasters associated with hazardous materials pose significant risks to human health, ecosystems, and economic stability. The release or mishandling of toxic substances can have severe consequences, including loss of life, environmental degradation, and long-term health impacts. Risk assessment plays a crucial role in understanding, mitigating, and managing these potential disasters. This article aims to explore the importance of risk assessment in identifying and evaluating the risks associated with hazardous materials, and its role in preventing or minimizing the impact of industrial and environmental disasters.

Environmental health is a critical field that addresses the complex interactions between human health and the environment. With increasing globalization and interconnectedness, environmental health issues have become global in nature, requiring a new model of learning to effectively address them. This essay explores the concept of environmental health in a global environment and highlights the need for a new model of learning to enhance our understanding and response to environmental challenges. Environmental health focuses on the study and management of environmental factors that can affect human health and well-being. It encompasses a broad range of factors, including air and water quality, chemical exposures, waste management, climate change, and the built environment. These factors can lead to various health risks such as respiratory diseases, cancer, and mental health disorders. Given the transboundary nature of environmental issues, it is crucial to approach environmental health from a global perspective.

Pollution in the environment and reduced fossil fuels supply urges to use non-edible biomass as renewable source of energy. Plant waste is observed more environmentally friendly than fossils fuels as renewable, sustainable and efficient biomass resource. Pyrolysis is one of the thermo chemical processes most effective for waste into energy product conversion and is an evolving technology. In present research, the pyrolysis of non-edible biomass (peach seeds and seed kernels) was performed to confirm its potential for renewable energy production. The maximum yield of Peach seed bio oil was 51% obtained at 550°C temperature while the maximum yield of Peach seed kernel bio oil was 41.5% obtained at 450°C temperature, 1mm of particle size, 90 min of reaction time and 200 cm³/min of nitrogen rate of flow. Bio oils obtained after pyrolysis process were analyzed for physical and chemical properties. Chemical properties determined by FTIR showed the presence of polymeric OH, alkanes, alcohols, aldehydes, ketones, carboxylic acids, alkynes, esters, ethers and aromatic compounds in peach seed and seed kernel bio oils.